I've just moved from a Jetmax to a full 737 DSTD. Almost everything's ready, except for some small configuration related issues ... and here's one that is really bugging me ...

As soon as I launch the avionics from the full cold and dark cockpit and I do the eletrical startup, the FO TAKEOFF CONFIG warning lights up ... I tried to continue with all the procedures by the book, but when I finish the engine startup procedure, the warning is still there, along with ELEC and AIRCON warnings on the glare panel.

I've checked all the inputs and outputs on the syscontroller and everything's fine ...